CONFIG_MACH_TS78XX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Technologic Systems TS-78xx

modulename: ts78xx-setup.ko

configname: CONFIG_MACH_TS78XX

Linux Kernel Configuration
└─>Marvell Orion
└─>Technologic Systems TS-78xx
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
Say 'Y' here if you want your kernel to support the
Technologic Systems TS-78xx platform.

source code:
arch/arm/mach-orion5x/ts78xx-setup.c